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AAT3143 Datenblatt(Datasheet) 6 Page - Advanced Analogic Technologies

Teile-Nr. AAT3143
Beschreibung  High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications
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Hersteller  ANALOGICTECH [Advanced Analogic Technologies]
Homepage  http://www.analogictech.com
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 6 page
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Typical Characteristics
VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF, TA = 25°C, unless otherwise noted.
Input Voltage (V)
Input Current vs. Input Voltage
(4x10mA)
0
10
20
30
40
50
60
70
80
90
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
VDIODE = 3.4V
VDIODE = 3.0V
Load Characteristics
(1.5X Mode, 4x15mA Load)
TIme (1µs/div)
VF
(20mV/div)
IIN
(10mA/div)
VCP
(20mV/div)
Line Response
(1.5X Mode, 4x19mA Load)
Time (1ms/div)
VIN
(0.5V/div)
VLED
(20mV/div)
VCP
(0.5V/div)
ID
(10mA/div)
Line Response
(1X Mode, 4x19mA Load)
Time (1ms/div)
VIN
(0.5V/div)
VLED
(20mV/div)
VCP
(0.5V/div)
ID
(10mA/div)
PWM Duty Cycle vs. LED Current
Duty Cycle (%)
0
2
4
6
8
10
12
14
16
18
20
0
10
2030
40
5060
70
8090
100
100Hz
10kHz
1kHz
1.5X Mode PWM Characteristic
(5kHz at 50% Duty Cycle)
Time (50µs/div)
VEN
(2V/div)
VLED
(2V/div)
IIN
(100mA/div)
ILED
(20mA/div)
AAT3143
High Efficiency 1X/1.5X/2X Charge Pump with
PWM Control for White LED Applications
6
3143.2006.05.1.0




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